KOE/GAB and Business Fax duplication of contacts

One problem that has come up is that when the GAB is visible in Outlook I see two contacts for every person.
I see a normal contact, and I also see a second contact that has an email address of {Full Name}@{Business Fax}???

In an attempt to fix the problem I modified the ldap.propmap.cfg file and commented out the PR_BUSINESS_FAX_NUMBER (0x3A24001E ) entry. It made no difference.
If I double click on the duplicate entry, I see the contact, but the email address if correct. The problem on presents itself when viewing the entries in the Address Book dialog box.